This is a story about my revenge. I was always called "plain glasses girl," and because of my plain older sister and my younger sister who was part of a group that always bullied me, my engagement was broken off. This is the tale of my revenge.

My younger sister has always been a beauty and would boast about it, mocking me as a plain, glasses-wearing fool. Everyone at the magic academy knew how she and her followers ridiculed me. My sister, who was obsessed with men, had a hobby of stealing the fiancés of female students and breaking up their relationships. I was constantly troubled, being yelled at by the girls to do something about her. And then she even stole my fiancé, the Crown Prince himself. On the day of the ball, the Prince declared that our engagement was broken off. So what was the revenge that I, in my anger, took against my sister and the Prince?